Seiko Cal. 4438 - 178

This Hand-Winding model from 1984 features a 46mm PVD Black case. With its 18mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-c584035da258]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1984

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